NumberResearchThousands-blocks in 707-305
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 707-305 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 707 blocks
Most active assignees, all time — NPA 707
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-08-17 | 707-305-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | VACAVILLE | CA |
| 2016-08-30 | 707-305-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 373F | VACAVILLE | CA |
| 2016-06-24 | 707-305-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VACAVILLE | CA |
| 2016-10-26 | 707-305-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VACAVILLE | CA |
| 2017-01-05 | 707-305-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | VACAVILLE | CA |
| 2018-04-04 | 707-305-5XXX | 5000–5999 | Assigned | COMCAST PHONE OF CALIFORNIA, LLC | 394L | VACAVILLE | CA |
| 2017-09-12 | 707-305-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VACAVILLE | CA |
| 2016-07-15 | 707-305-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VACAVILLE | CA |
| 2016-09-13 | 707-305-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | VACAVILLE | CA |
| 2016-04-21 | 707-305-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | VACAVILLE | CA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.